//****************************************************************
//  PalindromeTester.java   Author: Lewis/Loftus
//
//  Demonstrates the use of nested while loops.
//****************************************************************

import java.util.Scanner;

public class PalindromeTester
{
   //-------------------------------------------------------------
   //  Tests string to see if they are palindromes.
   //-------------------------------------------------------------
   public static void main(String[] args )
   {
      String str, another = "y";
      int left, right;

      Scanner scan = new Scanner(System.in);

      while (another.equalsIgnoreCase("y"))  //  allows y or Y
      {
         System.out.println("Enter a potential palindrome: ");
         str = scan.nextLine();

         left = 0;
         right = str.length() - 1;

         while (str.charAt(left) == str.charAt(right) && left < right)
         {
            left++;
            right--;
         }

         System.out.println();
         if (left < right)
            System.out.println("That string is NOT a palindrome");
         else
            System.out.println("That string IS a palindrome");

         System.out.println();
         System.out.println("Test another palindrome (y/n)?");
         another = scan.nextLine();
      }
   }
}
